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Nope, once it is in your profile it should automatically get pulled into any ticket you purchase when logged into your account.
Do note that TSA PreCheck is not available at all airports, and for security reasons it may occasionally not appear on your boarding pass.

Thanks -- yes, I know it is only available with certain airports and airlines at this time. Fortunately the 3 airports in the DC area have it. Just used Global entry for the first time on our return from Turkey yesterday and it was wonderful.

LAX T6 and BOS both had separate dedicated lines for TSA Pre-check. The instructions given when I checked in said to use those lines, so I did. Nobody in front of me in those lines.

My previous experience (last year) with TSA Pre-Check was at LAX T7 where you get in the same line as everyone else. Then when you get to the stand where the agent checks your ID and scans your bp. It was at that point where one time I was sent to the pre-check line and the other time with everyone else.

So I knew, the day before travel when I checked in, that I was going to be able to use the dedicated pre-check lines.